Event: Division Two

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Opponent Rating Result
Tony Shaw 1750 0 - 1
T Giles Stanton 1578 0 - 1
Fred S Dickson 1615 ½ - ½
Adrian Dibble 1461 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1501 = (6404 + 400 * (1 - 2)) / 4)

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